#include <iostream>
#define long long int
using namespace std;
main()
{
    int s1 , s2 , s3 , f1 , f2 , f3 , n;
    cin >> s1 >> s2 >> s3 >> f1 >> f2 >> f3 >> n;
    int rez1 = f1 - s1 , rez2 = f2 - s2 , rez3 = f3 - s3;
    rez1 /= (n-1) , rez2 /= (n-1) , rez3 /= (n-1);
    for(int i = 1 ; i < n ; ++i)
    {
        cout << s1 << ", " << s2 << ", " << s3 << endl;
        s1+=rez1 , s2+=rez2 , s3+=rez3;
    }
    cout << f1 << ", " << f2 << ", " << f3 << endl;
}